Surgical instrument



FIG. 1 is a perspective view of a surgical instrument, showing our new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

Portions of the surgical instrument shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a surgical instrument, as shown and described. 